Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Carrying Value and Estimated Fair Values of Outstanding Debt

The carrying values and estimated fair values of our significant outstanding debt as of December 31, 2022 and January 1, 2022 were as follows:

	December 31, 2022				January 1, 2022
(in millions of U.S. dollars)	Carrying Value		Fair Value		Carrying Value		Fair Value
3.875% senior notes due in 2028 1, 2	$	473.5	$	418.7	$	502.7	$	516.2
4.375% senior notes due in 20291, 2	741.4		642.2		740.0		735.8
Total	$	1,214.9	$	1,060.9	$	1,242.7	$	1,252.0

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1     The fair values were based on the trading levels and bid/offer prices observed by a market participant and are considered Level 2 financial instruments.

2     Carrying value of our significant outstanding debt is net of unamortized debt issuance costs as of December 31, 2022 and January 1, 2022 (see Note 17 to the Consolidated Financial Statements).